4. Comparison of Gas Sensing Parameters for Standard 2D Materials.

material	gas	Eads (eV)	dmin (Å)	Q (e)	ΔE g (eV)	τ (s)
arsenene	NO2	–0.44	2.96	–0.19	0.12	450
arsenene	SO2	–0.34	2.96	–0.19	0.09	430
GeSe	NO2	–2.24	2.29	–0.46	0.40	30
GeSe	SO2	–0.58	2.86	–0.28	0.20	120
borophene	NO2	1.75	1.56	0.76	1.12	60
C3N	NO2	–0.79	2.89	–0.39	0.32	85
C3N	SO2	–0.62	2.84	–0.25	0.28	160
Blue P	SO2	–0.25	3.00	–0.14	0.05	550
Ni–MoS2	SO2	–1.38	2.06	–0.02	0.35	70
GaN	NO2	–0.67	2.07	–0.11	0.20	310
ZnO	SO2	–0.85	2.45	0.12	0.05	150
CdO	NO2	–0.65	2.60	–0.10	0.10	220